Yoke member connecting device in windshield wiper

Abstract

A yoke member connecting device for use in a windshield wiper, which device pivotally connects a first and a second yoke members of the windshield wiper through a pivot pin. The first and second yoke members respectively have spaced side walls having aligned openings for passing through the pivot pin, and there is provided a spacer member having side walls interposed respectively between side walls of the first and second yoke members. At least one side wall of the spacer member has a small diameter bore corresponding to an intermediate small diameter portion of the pivot pin, a first cutout extending in a first direction from the bore, and a second cutout spaced from the first cutout in a second direction which is perpendicular to the first direction and extending parallel to the first cutout.

We claim: 
     
       1. A yoke member connecting device for pivotally connecting a first and a second yoke members of a windshield wiper, each of said yoke members having generally channel shaped cross section consisting of vertical side walls and a top wall connecting the upper ends of the side walls respectively, the connecting device comprises a spacer member having opposing side walls engaging with the inside surfaces of the side walls of the first yoke member and with the outside surfaces of the side walls of the second yoke member and a top wall connecting the side walls of the spacer member, and a pivot pin extending through the side walls of the first and second yoke members and of the spacer member, said pivot pin having a small diameter portion at the location passing through at least one of the side walls of the spacer member, said at least one side wall of the spacer member having a bore corresponding to the small diameter portion of the pivot pin, and a first cutout extending radially outward from said bore in one direction, said at least one side wall of the spacer member further having a second cutout spaced from the first cutout in the direction generally perpendicular to the first direction, and said second cutout extending generally parallel to the first cutout. 
     
     
       2. A yoke member connecting device in a windshield wiper according to claim 1, wherein said pivot pin has a small diameter portion at each location passing through each side wall of the spacer member. 
     
     
       3. A yoke member connecting device in a windshield wiper according to claim 1, wherein said first direction is the horizontal direction, and the second cutout is disposed on the upper side of said bore. 
     
     
       4. A yoke member connecting device in a windshield wiper according to claim 3, wherein said second cutout is provided on the upper side and also lower side of said bore. 
     
     
       5. A yoke member connecting device in a windshield wiper according to claim 1, wherein said first cutout extends in the vertical direction, and the second cutout is constituted of two vertically extending cutouts or grooves spaced horizontally from the first cutout and interposing the first cutout therebetween. 
     
     
       6. A yoke member connecting device in a windshield wiper according to claim 1, wherein the intermediate small diameter portion is defined by an annular groove. 
     
     
       7. A yoke member connecting device in a windshield wiper according to claim 1, wherein the intermediate small diameter portion is defined by a groove such as an arcuate groove or eccentric groove which terminates at the outer circumference of the large diameter portion of the pivot pin.